Machine for sharpening the sickles of harvest reapers and mowers



(Model.)

J. W. GREEN.

MACHINE FOR SHARPENING THE SIGKLES'OF HARVEST REAPERS 1@minimumu i? wf" ffrnnl lllllllllllllllil"lillllllllll IlIll/////////////////////////////// UNiTED STATES PATENT OFFICE.

.IUNIUS IV. GREEN, OF COLUMBUS, INDIANA.

MACHINE FOR SHARPENING THE SICKLES 0F HARVEST REAPERS AND MOWERS.

SPECIFICATION forming part 0f Letters Patent No. 426,122, dated April 22, 1890.

Application iiied April 30, 1888. Serial No. 272,510. (Model.)

To @ZZ whom, it Huey concern:

Be it known that I, .IUNIUS IV. GREEN, a citizen of the United States, residing at the city of Columbus, in the county of Bartholomew and State of Indiana, have invented certain Improvements in Machines forSharpening the Sickles of Reapiug and Mowing Ma chines, of which the following is a specification, reference being had to the accompanying drawings and the letters of reference thereon, in which- Figure l represents a side view of a harvester-cutter-grinding machine provided with my improvements. Fig. 2 is a top view of the Same.

A designates the main standard which snpports the mechanism, the said standard be ing provided at its lower extremity with a screw-clamp B for securing it to the edge of a table. The upper part of the standard A is bent forward and carries the axle a of a gear-wheel C, which isalso a crank-wheehbeing provided with a handle b. Pivotally connected with the said axle a and depending therefrom is a link I), which at its lower end carries the axle c of a gear-wheel E. A smaller gear-wheel F is rigidly connected with the wheel E an d is in position to engage with gearwheel C. j

G indicates a hanger, which is pivotally connected with the axle c of the wheel E. A grinding-wheel Il is fixed to an arbor or shaft d, which is carried by the hanger G at the lowerend thereof. On the shaft d of the grinding-wheel is fixed a pinion I, which is in position to connect with the gear-wheel E. The said hanger is provided with a thumb-piece or handle f, so that it may be moved on its pivot by hand to raise or lower the grindingwheel, as hereinafter stated.

.I indicates an adjustable slotted arm, which is secured by means of a thumb-screw e to the standard A, and is provided at its forward end with a claw or pawl g to connect with a notch or tooth 7L on the hanger G.

K indicates an adjustable seat for the sickle or cutter to be ground, the said seat being proiided with the claws t', to close against the edge of the table, and the rabbets m, to close en the back of the sickle.

L indicates a clamping-lever, which is used in connection with the seat K, the two parts being perforated and secured in position over the clamp B by a thumb-screw n. The adjoining surfaces of said parts K and L are beveled, so that by a lateral movement of the lever L the seat K is pressed rmly down and secures the sickle to the table.

INI indicates a slotted arm, which is adjustably secured by means of a screw o to the main standard A, said arm being extended forward, as shown. A water-can N is held by the arm M in position over the grindingwheel for supplying the latter with water during operation, the water being discharged through an aperture in or near the bottom of the can.

The main standard A being secured by means of the screw-clamp to the edge of a table or horizontal board, and the sickle being placed in front with its rear edge in the rabbets m and secured by a lateral movement of the lever Il, the operator with his right hand turns the wheel C, from which motion is imparted thro ugh the connecting-gearin g to the grinding-wheel. The operator, holding with his left hand the handlej' of the pivoted hanger G, the said hanger being in connection with the arm J by the pawl g hooking on the tooth h, raises the grinding-wheel from the sickle or lowers the wheel thereto, as desired.

For convenience in packing for transportation, the main standard is divided at P, the two parts being provided with corrugated surfaces which lap one on another. The corrugated surfaces iit together and the parts are secured by the screw o, by which the arm M is secured to the main standard.

I claim- 'lhe combination, with the main standard, of the seat K, provided with rabbets m and claws t', and a clamping-lever Il, which is mounted on the seat K, the adjoining surfaces of said lever and seat being beveled, so that by a movement of said lever the seat may be pressed downward to clamp the tool to be ground, substantially as hereinset forth.

JUNIUS W. GREEN. lVitnesses:

GEORGE W. ARNOLD, LAURA C. ARNOLD. 

